![](https://www.spaceweather.gov/sites/default/files/styles/pad_sides_large/public/top_news/29Mar0233_R3flarev3.jpg?itok=INe_V3O-)
R3 (Strong) HF Radio Blackout Event 29 March, 2023 UTC-Day
A R3 (Strong) HF radio blackout event occurred due to a X1.2 flare from Region 3256 on 28 March, 2023, at 10:33 pm EDT (29/0233 UTC). Visit our webpage for any additional information and updates.